Study On The Cultivated Land Resource And Its Service Value In Beijing

Beijing is an international metropolis,arable land area and population explosion form sharp contrast,in Beijing city land resources embodied in the ecological is indispensable,Beijing limited arable land resources more effectively use is very necessary.Therefore,the change and analysis of the cultivated land resources in Beijing city is of great significance.The development history and current situation of cultivated land in Beijing city.Through temporal and spatial variation analysis,find out the driving factor at the same time and the driving factor and Beijing is cultivated land of the detailed data collection and analysis,the Beijing land sector fragmentation,planting structure diversification,explosive population growth,GDP continued high,people a substantial expansion of the surface engineering,the project of returning farmland to forest and saving agricultural water,more than a dozen key of Beijing city cultivated land change driving factors were described in detail,and the relationship between these factors and the formation of Beijing city cultivated land driving mechanism for a complete analysis.Through a combination of Markov model and SBM model,the value of arable land in Beijing were analysis model,and farmland of Beijing ecological value and production value was calculated.The ecological value of cultivated land in Beijing city were classified,mainly from the gas regulation value,nutrient recycling value,value of water conservation and air purification four aspects of value analysis and value evaluation model.From two aspects of production value of the exposition,respectively is nearly 35 years to Beijing city cultivated land per hectare production value and Beijing land each year the total production value in the analysis process is difficult to compare with the embodiment of the development of Beijing City in agriculture,planting means the mechanization and modernization of Beijing city is more and more limited arable land to the decisive role.Throughr research and analysis,aiming at the current situation of land use of Beijing City,and cultivated land use efficiency and the development trend is very worthy of recognition,but also has many places to be perfected.Based on the protection and rational utilization of cultivated land resources,the cultivated land of Beijing city ecological value and production value combine to play a more effective role is still a very important problem.